hilger



G. HLLGER.

VALVE.

APPLICATION FILED MAR. 4, l9l8.

1,315,020. PatentedS .2,1919.

ZSHEE EETI.

. G. HILGER.

Patented Sept,

2 SHEETS-SHEET 2,

GEORGE HILGER, OF CHICAGO, ILLINOIS.

` VALVE.

Specification of Letters Patent.

Patented sept. e, 1919.

Appucation fried March 4, 191s. serial No. 220,137.

Z all wlw/1n it may concern.'

Be it known that I, GnonenHinGnR, a citizen of the United States, residing at Chicago, in the county of Cooland State or' Illinois, have invented certain new and useful Improvements in Valves, of which the following is a speciiication.

The invention relates to valves for use in systems wherein it is very desirable, if not necessary, that the How of fluid through the valve be uninterrupted after the systemhas been set in operation; and the object of the invention is to provide a valve in which the parts which are apt to become wornmay be removed for repair or replacement without interrupting the flow through the valve.

In refrigeration systems where valves are employed to regulate the flow of liquid ammonia for expansion into gaseous form, it is particularly desirable that the operation of the system be uninterrupted even when repairs are being made, and I have herein illustrated my` invention as applied `to an expansion valve of a refrigeration system. It will be understood, however, that I do not intend to be limited to such use, nor to `the particular construction and arrange# ment set forth, in the interpretation of the appended claims, except as may be necessitated by the state of the prior art.

In the drawings, Figure 1 is a central vertical sectional View through an expansion valve embodying the features of my invention and showing the normal position oi' the parts when the system is in operation. Fig. 2 is a fragmental verticaL sectional view of the valve showing the valve member and the seat member removedbut with the parts in position to form a passageway through the valve. Fig. 3 is a` sectional view on `line 3-3 of Fig. 2. Fig. 4 is a fragmental detail view of a tubular member forming between its periphery and the casing a passage-way in the valve when the parts are in the position shown in Fig. 2. i

rlhevalve comprises a casing; 1 having a partition 2 with an opening therein; a tubular member 4 mounted on the end of the screw stem 5 and having a removable seat member 6; and a valve member 7 arranged to coopera-te with Vsaid seat member. The parts are so proportioned and arranged that in one position a passageway is formed which extends through the tubular member and which arranged te be controlled by thevalve and seat members, while in another' position of the parts `a passageway` is formed around the tubular member independently of the valve and seat members which may thus be removed for repair.

` The casingl may be provided with the usual laterally extendingnecks S and 9, into which the inlet and outlet pipes 10 andll, respectively, are threaded, while the partition 2 extends substantially diagonally through the casing and `has the central open ing 3 therein through `which the passageway through the casing is formed. A bushing 12 is threaded in said opening 3 to form a port therein, and its' lower end extends downwardly into the lower portion of the casing. y Y

The tubular member 4 is entered loosely through the bushing 12 and said member is provided near its lower end with a peripheral flangeA or collar 13. `"The upper surface of `said collar, in one position of the member, is arranged to abut against the lower end of the bushing 12, and the lower surface of said collar, in the other position of the member, is arranged to abut against the upper edge of an opening or port 14, in the lower side of the casing, in which the valve and seat members operate. Preferably the upper andlower surfaces of said collar 13 are formed by grooved rings 15 and 16 'of soft metal, while the lower end of the bushing 12 is rounded as at 17 to receive the grooved ring 15, and an annular rim 18 is formed around the edge of the port 14 to receive the grooved ring 16.

The tubular member 4 is arranged to be operated into position upon either of the seats 17 and 18, by means of the screw stem 5 `mounted in the upper side of the casing. In the normal position ofthe parts the member 4 is in the position shown in Fig. 1 with its collar 13 seated upon the lower end ot' uthe bushing 12 and in this position the fluid is permitted to pass through the port 14, around the lower end of the valve seat member 6, which is mounted on the lower end of the meinber4, and thence into a central `opening 19 in said seat member which is alined with the opening in the tubular mein* ber. i Within the upper end of said tubular member is formed a conical seat 2() and the said member aand tapered as at 21 and arranged to cooperate with the seat 20 to control the flow of fluid through ports 22 'provided in said tubular member immedi? 4. To this end the stem is provided with al reduced portion or groove 23 of substantial width and a pair of transverse pins 24 mounted in the upper end of the tubular member and arranged to operate in said. groove 23 longitudinally of the stem 5. By this construction it will be apparent that by operating` the screw stem 5 t-he tubular member 4 may be held in raised position with its ring 15 abutting against the seat 17 of the bushing, or in lowered position with its ring 16 abutting against the seat 18 at the edge of the opening 14 in the lower side of the casing. Preferably the upper end of the bushing 12 which extends a short distance above the partition 2 is provided with a pair of alined notches or slots 25 communicating with the ports 22 in the tubular member 4. A free iiow of fluid from said ports is thus permitted. The screw stem 5 may be mounted in a head 26 threaded into the upper side of the casing and provided with the usual packing box 27, and the upper end of said stem may be squared as at 5 to receive a wrench for operating the stem.

The valve seat member 6 is in the form of a cap screwhaving its shank threaded into the lower end of the tubular member 4 and its head abutting against the lower end oit said member 4. The central opening 19 of said seat member is tapered upwardly and outwardly and the lower edge of said opening forms av seat for the conical upper end or needle of the .valve member 7. The head portion of said seat member is arranged to extend downwardly into the port 14 in the casing and is made slightly smaller in diameter than the'opening so as to form a restricted passage for the fluid.

The valve'mem'ber 7 has a screw stem mounted in a head 28 threaded into the lowei` wall of the casing 1 and having the usual packing boX 29; and on the lower end ot said 'stem may be provided a hand wheel 30 by means of' which the stem may be operated to regulate the position ofthe needle with reference to its seat upon the inember 6. y,

As hereinbefore stated, the normal ar-4 rangement of the parts is shown in Fig. 1, wherein the valve member 7 may be manipulated to control the flow of fluid through Y the valve. In this position of parts the passageway for the fluid is around the lower end of the seat member 6 through the opening 19 therein, the tubular member 4 and out through the ports 22 in the upper end of said tubular member,'the lower end 21 of the stem 5 being spaced from its seat 20 in the tubular member to an extent equal to the width of the groove 23.

lV hen it is desired to remove the seat member 6 and the valve member 7 for any reason, as for the purpose of repair, this may be accomplished without discontinuing the flow of fluid through the valve. To this end the stem 5 is screwed down into engagement with its seat 20 to close the upper end oi the tubular member and also to hold the collar of the tubular member 4 in engagement with the seat 18 around the opening- 14. Any escape of fluid from the casing through the port 14 is thus prevented and the removal oi. the valve and seat members is permitted. 7When the tubular member is in this position (Fig. 2), the passageway through the valve is formed between the periphery oi? the member 4 and the inner surface of the bushing 12.

As shown in Fig. 4, one or more grooves 31 may be provided in the outer periphery of the tubular member adapted to increase the area of said passageway and thus facilitate the {iow of iiuid through the casing, and ifv desired the 'bushing 12 may also be grooved as at 32 for the same purpose. lt will be evident, however, that the emp1oyment of such grooves is not essential for the reason that the annular passageway formed between the tubular stem and bushing 12 may be made ot the proper diameter to permit the fluid to pass at a. suliieiently rapid rate of speed.

For convenience in removing and asmmbling the seat member, its lower end may be provided with openings 33 adapted to receive a spanner wrench., the tubular membei` being, for this purpose, prevented 'from turning b v reason of its rictional engagement with the seat 18 on the easing.

lhile l have herein described the valve with reference to the vertical position illustrated in the drawings. I have, done :so merely for convenience, it being` evident that the valve is operative in any position in which it is desired to be used.

I claim as my invention:

1. A valve comprising, in combination, a easing having` a partit-ion with a port therew in and having a port in its wall alined with said por-t in the partition, a valve member mounted in the wall oi said casing and extending through said port therein, a tubular member extending through said port in the partition, a screw Stem mounted in the wall of the easing and having its inner end slidably connected to said tubular member and arranged to be operated to cause said tubular member to close either the port in the partition or the port in the casing and said stem serving to cooperate. with the tubular member to permit or prevent the How ot iluid therethrough according to whether the member closes the port in the partition or the port in the casing, and a seat member arranged to cooperate with said valve meinber to Control the flow of fluid through the tubular member, said seat member being mounted on the tubular meinber so as to be removable therefrom when desired.

A valve comprising, in eoi'nbiination, a eas-inn' having a partition with a port therein and having'a port in its wall alined with said port in the partition, a valve member mounted in the wall oi'l said easingand exiiending through said port therein, a tubular member extending through said port inthe partition and having' a conical seat in its upper portion and outlet ports adjaeentsaid seat, a sei'ewl stem mounted in the wall et the easing' and having its inner end tapered and slidably connected to said tubular inember whereby by the operation of said "stem the tubular member may be either held in position to elose the port in the partition and to permit. the flow` ott fluid through the tubu-4 lar member, or may be held in position to prevent a flow of fluid through the tubular member and said ports and to permit a flow of fluid around the member, and a seat member `carried by saidtubular member, said valve and Seat members being` adapted te be removed when the flow of fluid,` through the tubular member is prevented.

A valve comprising', in Combination, a easinghaving a partition with an opening therein and a port in`its wall, a bushing in said openinginthe partition alined with the opening' in the wall, a valve member mount-- ed in the wall of said easing and entf-ending` through said port therein, a tubular member extending through said bushing in the parti tion and having a Collar arranged to seat either upon one endof the bushing or upon the edge of the port in the easing, a screw stem mounted in the wall of the easing' and operatively eonneoted with said tubular member whereby by the operation of said stem said collar may be held in position to Close the opening` in thepartitioii and to permit the flow of fluid through the tubular member, or in position to preventa flow of fluid through the tubular member and to permit a iiow of luid around the member`A and a seat member Carried by saidtubular member, said valve `and seat members being adapted to be removed when'the flow et fluid tl'ii'ouii'h the tubular member is prevented.

1L. A valve comprising, in combination, a easing having' a partition with a port therein and a port in its wall,a valvemember mounted in the wall of said easing' and eX- tending through said port therein, atubular member extending through said` port in the partition, means operativelyassociated with said tubular member wherebysaid `member may be' either held in position to elose the port in the partition and to permit a flow or fluid through the member, or may be held in position to prevent new et fluid therethe flow of il around the member, said valve and seat membersbeing adapted te beremoved when uid through the tubular member is prevented'.

"5. A valve comprising, in combination, a

`easing` havingv apartition with a port there in and' a portiii its wall, a valve member mountedin thefwall of said easing and extending through said `port therein, a sorew stem mounted in the wall. ofthe easing, and

,1 means operatively assoeiatedwith said stem for operation thereby to elose the port in the partiti-on and to permit ot al flow of Huid through said` port in the easing, or vice versa, 'and a seat member for said valve member, saidvalve and seatineinbers being `adapted to be removed when the port in the easing is closed. s

6. A valve comprising, in combination, a easing having a transverse partition with a port therein and a port in its wall, a valve member` and a seat member, and means adapted to form one passageway through `said easing arranged to beeontrolled by `said `valve and seat members or `to form another passageway i through the easing independently ofsaid members, said means including a screw `stein mounted in the wall of the easingand having an annular groove of substantial y width in `its lower end, a tubular member having' a `pin `operating inVsaid `groove longitudinally of the stein andhaving a peripheral collar, said pinfand-i'roove connection between the stein and tubular member being arranged to perinitthe stem `tooperate said member into position to either elose the port in the partition or the port in the easing.`

TQA valveleomprising, in combination, a` easing having an inlet and an outlet, a valve member `and a seat member, and means adapted to form with said inlet aiidoutlet one passageway through said easingarranged to be `controlled by said valve and seat members, or to tlormwithsaid inlet and outlet Ianother passageway througlithe easing independently of` said members, said means including a tubular member movably mounted in the easing and adapted to eo- ,operate therewith to form said passageways.

8. A valveeomprising, ineonibinatioii, a

`easing"havingn an inlet `,and an outlet, a valve member" and a seat member, `and means adapted toform with said inlet and outlet one passageway through saideasmg ar- 'anged to be controlled by said valve and i A seat members o1 `to forni with said inlet and outlet another passageway through the easing independently of saidinembers, i said meansuineluding a tubnlarmember, and a screw stem having` a slidinga eonneetion therewith. A i i i i A valve comprising, in combination, a easing having; a port in its wall, a valve ifo ian

member and a seat member, and means adapted to formone passageway through said easing arranged to be controlled by said valve and seat members or to form another passageway through the easing independently of said members, said means including a tubular member into which said seat member is threaded and arranged to be iremoved through said port in the easing.

10. A valve comprising, in combination, a casing having means forming two independent passageways, said means including a member movable into position to close either of said passageways, and valve mechanism operatively associated with said inember to control the flow of fluid through one of said passageways.

11. A valve comprising, in combination', a easing having two ports, a member movable into position to close either of said ports, and a valve member entered through one of said ports and arranged t-o control the flow of fluid when the first-mentioned membericloses the other one of said ports.

12. A valve comprising, in combination, a casing having two alined ports, a member movable into position to close either of said ports, a valve seat member removably carried by said movable member, and a valve member arranged to eoaet with said seat member.

13. A valve comprising, in combination, a easing having an inlet and an outlet and two alined ports, and a closure member movable into yposition to effectively close either of said ports, and operative by its own movement when closing either port to establish communication between said inlet and said outlet throughthe other port.

14. Avalve comprising, in combination, a easing having two ports, an inlet and an outlet, and a tubular member movable into position to effectively close either of said ports and arranged to form a fluid passagelway between said inlet and said outlet when elosingeither port, one of said passageways being formed around and the other through said tubular member.

15. A valve comprising, in combination, a casing having two alined ports, a tubular member movable into position to close either A of said ports and arranged to form a fluid other, a member movable into position to close either of said ports and having a valve seat, a: valve member arranged to coat-t with said seat and having an operating serew stem mounted in one side of the easing, and means for moving said movable member including a screw stem mounted in the other side of the casing.

19. A valve having, in combination, a easing having an inlet and an outlet and a port, a' member movable into position to l either close or open said port, said member serving when said port is open to form a fluid passageway between it and the port communicating with said inlet and out-let and being adapted to permit a flow of fluid therethrough from the inlet to the outlet when closing the port.

20. A valve having, in combination, a casing having a port, a member movable into position to either close or open said port, said member serving when said port is open to form a fluid passageway between lit and the port and when said port is closed thereby to form a passageway therethrough, and valve mechanism vfor controlling the iate of flow of fluid through the second mentioned passageway.

2l. A valve having, in combination, a easing, means forming two passageways, means for closing either of'said passageways, and valve mechanism for controlling the flow of fiuid through one of the said passagewavs including a valve member and aA seat member therefor adapted to be removed when one ol the passageways is closed.

22. A valve having, in combination. a rasing having a port, a head removably monnied in the side of the casing in axial aline,- ment with said port, a moable, member adapted to close said port, a seat member carried by said movable member, and a needle valve mounted in said head and arranged to eoact with said seat member to regulate the rate of flow through the easing.

23. A valve havin T in combination a casing having two ports, a member having a passageway therethrough and movable into position to close either of said ports, and an operating stem mounted in the casing and having a sliding connection with said 'member, said stem 'heilig adapted in one position to close the passageway in said member.

24. A valve having, in combination` a ing having two ports, a member movable position to close either of said ports easinto and lie having a valve seat, an operating stem mounted in the easing and having a sliding connection with said member, and a' valve member' mounted in the easing and arranged to eoaet with said valve seat.

25. In combination With a easing having a through passage, controlling means for said passage adapted to form tvvo separate passageways one of which is closed While the other is open, and a valve mechanism arranged to control the rate of iiovv through one of said passagevvays, said casing having an opening therein through which said valve mechanism may be removed When the passageway controlled thereby is closed and said opening being closed when the other passageway is open.

26. A valve having, in combination, a easing having a port and an opening, aV bushing in said opening having a slot near one end, a tubular member movable in said bushing into position to olose either one end thereof or said port and having a port near its oppor site end communicating With said slot in the bushing, and means for closing the port in the tubular member When said member closes the port in the easing.

' 27. A valve having, in combination, a oasing having two ports, a tubular member movable into position to olose either of said ports, means for stopping the flow of luid through said tubular member when it closes one of said ports, and means for controlling the fioW oi' fluid through said tubular member When it closes the other one of said ports.

2S. A valve having, in combination, a easing having an inlet and an outlet opening and a port in its Wall and having a partition between said Openings with a port therein, a tubular member movable into position to elose either of said ports, the interior thereof being arranged to communicate With said inlet and outlet when closing the port in the partition, and means for stopping the flow of fluid through said tubular member When it closes the port in the easing Wall.

In testimony whereof I have hereunto set my hand.

GEORGE HILGER.

4opes of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. 

